Cationic geminies play an important role nowadays in many industrial applications concerned in protection of eco system (corrosion resistance). The three cationic Gemini surfactants based on amide of succinic acid (OGC, DGC, HGC) were evaluated as anti-corrosive materials for mild steel (MS) in 0.5 mol/L H2SO4 medium. The inhibition efficiencies were evaluated using gravimetric, electrochemical te...